gov.redhawk.sca.internal.ui.preferences.DataProviderPreferencePage.java Source code

Introduction

Here is the source code for gov.redhawk.sca.internal.ui.preferences.DataProviderPreferencePage.java

Source

/** 
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * All rights reserved.  This program and the accompanying materials are made available under 
 * the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html.
 *
 */
package gov.redhawk.sca.internal.ui.preferences;

import gov.redhawk.model.sca.IScaDataProviderServiceDescriptor;
import gov.redhawk.model.sca.ScaModelPlugin;
import gov.redhawk.sca.model.preferences.ScaModelPreferenceContants;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.ICheckStateProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.preferences.ScopedPreferenceStore;

/**
 * 
 */
public class DataProviderPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

    private static class Descriptor {
        private final IScaDataProviderServiceDescriptor desc;
        private boolean enabled;

        public Descriptor(final IScaDataProviderServiceDescriptor desc) {
            this.desc = desc;
        }

        @Override
        public String toString() {
            return this.desc.getName();
        }
    }

    private final List<Descriptor> dataProviders = new ArrayList<DataProviderPreferencePage.Descriptor>();

    private CheckboxTableViewer viewer;

    /**
     * 
     */
    public DataProviderPreferencePage() {

    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected Control createContents(final Composite parent) {
        final String str = getPreferenceStore().getString(ScaModelPreferenceContants.DISABLED_DATA_PROVIDERS);
        final List<String> disabledProviders = Arrays.asList(str.split(","));
        for (final IScaDataProviderServiceDescriptor desc : ScaModelPlugin.getDataProviderRegistry()
                .getDataProvidersDescriptors()) {
            final Descriptor d = new Descriptor(desc);
            d.enabled = !disabledProviders.contains(d.desc.getId());
            this.dataProviders.add(d);
        }

        this.viewer = CheckboxTableViewer.newCheckList(parent, SWT.BORDER);
        this.viewer.setContentProvider(new ArrayContentProvider());
        this.viewer.setLabelProvider(new LabelProvider());
        this.viewer.setCheckStateProvider(new ICheckStateProvider() {

            @Override
            public boolean isGrayed(final Object element) {
                return false;
            }

            @Override
            public boolean isChecked(final Object element) {
                return ((Descriptor) element).enabled;
            }
        });
        this.viewer.addCheckStateListener(new ICheckStateListener() {

            @Override
            public void checkStateChanged(final CheckStateChangedEvent event) {
                ((Descriptor) event.getElement()).enabled = event.getChecked();
            }
        });
        this.viewer.setInput(this.dataProviders);
        return this.viewer.getControl();
    }

    @Override
    public boolean performOk() {
        final StringBuilder builder = new StringBuilder();
        for (final Descriptor desc : this.dataProviders) {
            if (!desc.enabled) {
                builder.append(desc.desc.getId());
                builder.append(",");
            }
        }
        String value = "";
        if (builder.length() > 0) {
            value = builder.substring(0, builder.length() - 1);
        }
        getPreferenceStore().setValue(ScaModelPreferenceContants.DISABLED_DATA_PROVIDERS, value);
        return super.performOk();
    }

    @Override
    public void init(final IWorkbench workbench) {
        setPreferenceStore(new ScopedPreferenceStore(InstanceScope.INSTANCE, ScaModelPlugin.ID));
    }
}